// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_GFX_SELECTION_BOUND_H_
#define UI_GFX_SELECTION_BOUND_H_

#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/point_f.h"
#include "ui/gfx/gfx_export.h"

namespace gfx {

class Rect;
class RectF;

// Bound of a selection end-point.
class GFX_EXPORT SelectionBound {
public:
    enum Type { LEFT,
        RIGHT,
        CENTER,
        EMPTY,
        LAST = EMPTY };

    SelectionBound();
    SelectionBound(const SelectionBound& other);
    ~SelectionBound();

    Type type() const { return type_; }
    void set_type(Type value) { type_ = value; }

    const gfx::PointF& edge_top() const { return edge_top_; }
    const gfx::Point& edge_top_rounded() const { return edge_top_rounded_; }
    void SetEdgeTop(const gfx::PointF& value);

    const gfx::PointF& edge_bottom() const { return edge_bottom_; }
    const gfx::Point& edge_bottom_rounded() const { return edge_bottom_rounded_; }
    void SetEdgeBottom(const gfx::PointF& value);

    void SetEdge(const gfx::PointF& top, const gfx::PointF& bottom);

    bool visible() const { return visible_; }
    void set_visible(bool value) { visible_ = value; }

    // Returns the vertical difference between rounded top and bottom.
    int GetHeight() const;

private:
    Type type_;
    gfx::PointF edge_top_;
    gfx::PointF edge_bottom_;
    gfx::Point edge_top_rounded_;
    gfx::Point edge_bottom_rounded_;
    bool visible_;
};

GFX_EXPORT bool operator==(const SelectionBound& lhs,
    const SelectionBound& rhs);
GFX_EXPORT bool operator!=(const SelectionBound& lhs,
    const SelectionBound& rhs);

GFX_EXPORT gfx::Rect RectBetweenSelectionBounds(const SelectionBound& b1,
    const SelectionBound& b2);

GFX_EXPORT gfx::RectF RectFBetweenSelectionBounds(const SelectionBound& b1,
    const SelectionBound& b2);

} // namespace ui

#endif // UI_GFX_SELECTION_BOUND_H_
